Charles Sykes / Invision/AP 1 / 10
Charles Sykes / Invision/AP 1 / 10

The Rolling Stones star Mick Jagger is to become a great-grandfather next year.

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The musician's 21-year-old granddaughter Assisi is expecting a baby with her chef boyfriend, and the new addition to the family will make the 70-year-old star a first-time great-grandfather, according to Britain's Daily Mirror.

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Socialite Assisi is the eldest child of Jagger's daughter Jade. A source tells the newspaper, "She (Assisi) and (her partner) Alex are thrilled and broke the news to their immediate families last week. Jade was a little taken aback at first, not least because it means she will be a grandmother by the age of 42... Mick is delighted and has no qualms about being a great-grandfather. He's been joking about becoming a great, great, granddad and still performing!"

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